package com.coolxi.filter;

import com.coolxi.entity.User;

import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * Created by Eoly on 2017/6/13.
 */
public class LoginFilter implements Filter {

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        User user = (User) request.getSession().getAttribute("loginUser");
        if (user == null) {
            String path = request.getContextPath();
            response.sendRedirect(path + "/user/login.html");
        } else {
            filterChain.doFilter(request, response);
        }
    }

    @Override
    public void destroy() {

    }
}
